Police are currently negotiating with a man on the roof of an apartment block, close to where a woman's body was found this morning in Chatswood.
The man is currently on the awning of a balcony on the 26th floor of the apartment block on Brown Street and the street has been cordoned off by police, with traffic diverted.
It is understood that a Korean interpreter is currently trying to speak with the man.
The stand-off has been underway for five hours, according to 7 News.
The woman who was found this morning is estimated to have been in her mid-20s.
More to come.